white LCD after replacement

Its important you know whether you have the right screen or not if you ordered one for the model number you have then it should be correct. If the screen is correct then try checking all the cables and plug ins inside re-connecting them to make sure they are all tight. If you can turn it on with it apart try that and wiggle things around like the screen plug in and see if you get anything at all. The biggest thing is make sure you go back double check your work and just go over it again. Whether it be with computers cars or phones i have done a repair and had a problem and went back over everything i did then it worked thats happened hundreds of times to me. If the screen you got doesnt match the model number in the listing then there is your problem.